她们都有一个小的边距以便看起来更好一些。
他们都有一个小的边距以便看起来更好一些。
小净距隧道的中间夹岩处于复杂的三维受力状态。
Sandwiched rock between twin closely spaced tunnels is in complicated and three-dimensional stress state.
我们的输送设备能进行高强度输送,具有节距小、易衔接、拉力强的特点。
Our conveyor has a strong intensity and stretch with a small pitch.
我们的输送设备能进行高强度输送,具有节距小、易衔接、拉力强的特点。
Our conveyor has a strong intensity and stretch with a small pitch.
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